I have a VM with 8 core of processing, and occasionally the CPU usage is going to around 75 ~ 100%.
I read in some places, that when the CPU usage is with more than 75% is it a trouble, and can damage the processor, besides it can slow the processes running.
So, what is the advisable maximum CPU usage?
If you give-me reliable sources, it is good.
Best Answer
100% is totally fine. Wherever you read it damages the processor -those are idiots with no proper cooling.
Whether 100% CPU utilization is acceptable depends - on the task. Yes, the computer will get sluggish. So what? If the job of the server is to finish calculating something then I rather have him use 100% of the CPU than take longer.
Acceptable CPU usage limits really depend - on usage. For a general purpose server, 50% average load on a per minute base may be where you consider upgrading. But then, my company does a ton of statistical analysis and our HPC server cluster is expected to run at 100% - if that does not happen, we look for and fix the bottle neck.